
<template>
  <div class="todo-footer">
    <label>
      <input type="checkbox" :checked="allCheck" @change="changeAllCheck()"/>
    </label>
    <span>
			<span>已完成{{doneNum}}</span> / 全部{{allNum}}
		</span>
    <button class="btn btn-danger" @click="deleteAllDoneTodo">清除已完成任务</button>
  </div>
</template>

<script>
export default {
  name: 'UserFooter',
  data() {
    return {
      allCheck: false
    }
  },
  methods: {
    deleteAllDoneTodo() {
      this.deleteAllTodo()
      this.allCheck = false
    },
    changeAllCheck() {
      this.allCheck = !this.allCheck
      this.updateAllCheck(this.allCheck)
    }
  },
  props: {
    allNum: {
      type: Number,
      default() {
        return 0
      }
    },
    doneNum: {
      type: Number,
      default() {
        return 0
      }
    },
    deleteAllTodo: {
      type: Function,
      default() {
        return function () {
        }
      }
    },
    updateAllCheck: {
      type: Function,
      default() {
        return function () {
        }
      }
    }
  }
}
</script>


<style scoped>
/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}
</style>